Jambs stewart and dayid windsor



J. STEWART & D. WINDSOR.

Concrete Brick Machine.

No. 65,024. Patented May 21, 1867.

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ll-nll gums gems gaunt @ffira JAMES STEWART AND DAVID WINDSOR, OF SANDWICH, ILLINOIS.

' Letters Patent No. 65,024, ams Ma -21, 1867.

IMPROVEMENT IN CONCRETE BRICK MAGHINES.

TO ALL WHOM IT MAY CONCERN:

Be it known that we, JAMES STEWART and DAVID WINDSOR, of Sandwich, in the county of De Kalb, and State of Illinois, have invented a new and useful Improvement in Gonorete Brick Machines; andwe do hereby declare and make known that the following is a full, clear, and exact description of the'same,-reference being had to the accompanying drawings, and the figures and letters marked thereon,'which formpart of this specification. I 7

Our said invention relates to that class of machines which are used to form a species of brick known as concrete brick, being formed of mortar or mastic, when in a plastic state, pressed into the desired form and size, I

and then allowed to harden by exposure. v 1

To enable those skilled in the art to understand how to construct and use our invention, we will now describe its construction and operation with particularity, making refcrence in so doing to the aforesaid drawings, in which Figure 1 represents a front elevation of our invention.

Figure 2 is a vertical section through the same.

Figure 3 is a plan view of the same, the slide S being removed; and

Figure 4 is a plan section taken at a: in fig. 2, the levers being removed.

Similar letters of reference in the several figures denote the same parts of our said invention.-

A represents a suitable frame, supporting and containing the operating parts of our machine, having two moulds, B B, at the top, open upwards, but covered by a movable slide, S, which has allongitudinal-movement in suitable grooves in-the frame. The moulds B B have their bottoms 0 adjustable vertically, and'have attached thereto arms D, the lower ends of which res t upon the upper side of a horizontal bar or follower, E, as shown. The said bar E rests upon the upper ends of the lovers H, the said ends being rounded off and arranged in corresponding grooves in'the lower side of the bar E, as indicated in the drawings. The lower ends of said levers H H are provided with grooves h h to receive the upper ends of the levers I I, as shown, whose lower ends are supported upon the supports J, fixed stationary upon the frame. The upper ends of the levers I I are provided with lugs K K, which are connected by arms L L to arms M M, upon the shaft N, as shown, which shaft has its hearings in the side parts of the frame A, as shown, and is provided with a handle, P, for operating the same, as hereinafter described. Through slots e e in the following bar E arm-s F F, attached to the arms I) D, project and aresecured to one end of a lever, G, having its fulcrum at 5/, whereby the plungers or bottoms Cof the moulds may be moved up without and independent of the said following bar E. c 0 represent lugs upon the plungers G C, which pass through slots in theframe, as shown, I) 6 representing similar lugs upon the bar E, and a a upon the upper ends of the levers H H, 01 being the shaft or red arranged in like manner to keep the arms F F in position.- I

In operation the machine has a hopper attached, from which the mortar is fed into the moulds, the slide S being removed for that purpose. The moulds are filled when the lovers H I are in the position indicated in black lines in fig. 2, and the slide S is then replaced over said moulds, when, by a partial turn of the shaft N, which is accomplished by moving the handle P, shown in fig. 1, the said movement throws the levers into the position indicated in'blue lines in said fig. 2, which raises the plungers O C and presses the contents of the moulds B B as desired. The slide S is then removed, and by a. downward movement of the lever .G the said plungers are raised to the top of the mould, throwing. the bricks out of the moulds, when they are removed, and the machine adjusted and moulds filled for another operation.

.By the peculiar arrangement herein shown, an immense pressure can be brought to bear upon the press by the exercise of a trifling power, rendering it a very efi'cctual and thorough machine, and one capable'of being rapidly and easily operated:

Having described the construction and operation of our invention, we will now specify what we claim, and desire to secure by Letters Patent: v

1. We claim the combination and arrangement of the moulds B B, plungers O 0, following her E, arms H H I I, connecting arms and shaft N, substantially as and for the purposes specified.

2. We claim; in combination withthe above, the arms F F and lover G, arranged as and for the purposes described.

JAMES STEWART, I DAVID WINDSO-R. Witnesses:

Rosr STEWART, O. E. Bnnrs. 

